US PATENT SUBCLASS 327 / 79
.~.~.~.~ Zero crossover


Current as of: June, 1999
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327 /   HD   MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS

1  DF  SPECIFIC SIGNAL DISCRIMINATING (E.G., COMPARING, SELECTING, ETC.) WITHOUT SUBSEQUENT CONTROL {11}
50  DF  .~ By amplitude {9}
77  DF  .~.~ Input signal compared to single fixed reference {10}
78  DF  .~.~.~ Reference level crossover detecting {1}
79.~.~.~.~ Zero crossover


DEFINITION

Classification: 327/79

Zero crossover:

(under subclass 78) Subject matter wherein the reference level which is transited is zero volts.

SEE OR SEARCH THIS CLASS, SUBCLASS:

451+, for AC supply zero point switching utilizing a four or more layer device such as a thyristor.